Texas Governor Rick Perry ordered 1,000 National Guard soldiers to the border, saying the deployment is needed to stop cross-border drug smuggling. But the move is getting mixed reviews from locals and law enforcement officials, who argue it's a job for police.

For the last six years, a little-known infusion of American tax dollars has played a part in the fight against organized crime in the Mexican border city of Ciudad Juárez. Part of the money for the Merida Initiative is used to keep young people out of drug cartels and help boost the economy.

Not long ago, violence related to Mexico's drug cartels devastated Ciudad Juárez, a city on the Texas-Mexico border. Now, violence is down and residents are trying to help the children left behind by it.

This story takes us to the banks of the Rio Grande river in South Texas. It's where a cat-and-mouse game plays out every night between migrants crossing into the US illegally and the Border Patrol. That game is intensifying.